Heh, I may have told you all this before, but one of the times I was in TGS's queue before they made the current adjustments, a kid started scrawling his name across the wall. Now, he wasn't by himself or with a group of other kids - he was actually with his parents! And when the ride-op spotted him and told him he would be escorted out by security, the
parents got all mad and started berating the ride-op, telling him that they should have a sign up if they don't want people to graffiti. Apparently some people think anything is OK unless there's a sign and a cop telling them not to.
Yeah though, kids suck. It's a good thing this event is technically closed off to the public - that's the best way to handle it. The park gets a load of cash and publicity, and the GP doesn't have to deal with it.